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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_SVTOOLS_SVPARSER_HXX
#define INCLUDED_SVTOOLS_SVPARSER_HXX
#include <svtools/svtdllapi.h>
#include <tools/link.hxx>
#include <tools/ref.hxx>
#include <tools/solar.h>
#include <rtl/textenc.h>
#include <rtl/ustring.hxx>
#include <vector>
#include <memory>
template<typename T> struct SvParser_Impl;
class SvStream;
enum class SvParserState
{
Accepted = 0,
NotStarted,
Working,
Pending,
Error
};
template<typename T>
class SVT_DLLPUBLIC SvParser : public SvRefBase
{
DECL_LINK( NewDataRead, LinkParamNone*, void );
protected:
SvStream& rInput;
OUString aToken; // scanned token
sal_uLong nlLineNr; // current line number
sal_uLong nlLinePos; // current column number
std::unique_ptr<SvParser_Impl<T>> pImplData; // internal data
long m_nTokenIndex; // current token index to detect loops for seeking backwards
long nTokenValue; // additional value (RTF)
bool bTokenHasValue; // indicates whether nTokenValue is valid
SvParserState eState; // status also in derived classes
rtl_TextEncoding eSrcEnc; // Source encoding
sal_uInt64 nNextChPos;
sal_uInt32 nNextCh; // current character codepoint in UTF32 for the "lex"
bool bUCS2BSrcEnc : 1; // or as big-endian UCS2
bool bSwitchToUCS2 : 1; // switching is allowed
bool bRTF_InTextRead : 1; // only for RTF-Parser!!!
struct TokenStackType
{
OUString sToken;
long nTokenValue;
bool bTokenHasValue;
T nTokenId;
TokenStackType();
};
// methods for Token stack
T SkipToken( short nCnt = -1 ); // "skip" n Tokens back
TokenStackType* GetStackPtr( short nCnt );
// scan the next token:
// work off Token stack and call GetNextToken_() if necessary.
// That one is responsible for the recognition of new Tokens.
T GetNextToken();
virtual T GetNextToken_() = 0;
// is called for each Token that is recognized in CallParser
virtual void NextToken( T nToken ) = 0;
// at times of SvRefBase derivation, not everybody may delete
virtual ~SvParser() override;
void ClearTxtConvContext();
private:
std::unique_ptr<TokenStackType[]> pTokenStack;
TokenStackType *pTokenStackPos;
sal_uInt8 nTokenStackSize, nTokenStackPos;
public:
SvParser( SvStream& rIn, sal_uInt8 nStackSize = 3 );
virtual SvParserState CallParser() = 0; // calling of the parser
SvParserState GetStatus() const; // StatusInfo
sal_uLong GetLineNr() const;
sal_uLong GetLinePos() const;
void IncLineNr();
sal_uLong IncLinePos();
void SetLineNr( sal_uLong nlNum );
void SetLinePos( sal_uLong nlPos );
sal_uInt32 GetNextChar(); // Return next Unicode codepoint in UTF32.
void RereadLookahead();
bool IsParserWorking() const;
Link<LinkParamNone*,void> GetAsynchCallLink() const;
// for asynchronous reading from the SvStream
void SaveState( T nToken );
void RestoreState();
virtual void Continue( T nToken );
// Set/get source encoding. The UCS2BEncoding flag is valid if source
// encoding is UCS2. It specifies a big endian encoding.
void SetSrcEncoding( rtl_TextEncoding eSrcEnc );
rtl_TextEncoding GetSrcEncoding() const;
// May the character set be switched to UCS/2, if a BOM
// is in the first two characters of the stream?
void SetSwitchToUCS2( bool bSet );
bool IsSwitchToUCS2() const;
// how many bytes a character consists of
sal_uInt16 GetCharSize() const;
T GetSaveToken() const;
};
// build a Which-Map 'rWhichMap' from an array of WhichIds
// 'pWhichIds'. It has the length 'nWhichIds'.
// The WhichMap is not deleted.
SVT_DLLPUBLIC void BuildWhichTable( std::vector<sal_uInt16> &rWhichMap,
sal_uInt16 const *pWhichIds,
sal_uInt16 nWhichIds );
/*========================================================================
*
* SvKeyValue.
*
*======================================================================*/
class SvKeyValue
{
/** Representation.
*/
OUString m_aKey;
OUString m_aValue;
public:
/** Construction.
*/
SvKeyValue()
{}
SvKeyValue (const OUString &rKey, const OUString &rValue)
: m_aKey (rKey), m_aValue (rValue)
{}
SvKeyValue (const SvKeyValue &rOther)
: m_aKey (rOther.m_aKey), m_aValue (rOther.m_aValue)
{}
/** Assignment.
*/
SvKeyValue& operator= (SvKeyValue const &rOther)
{
m_aKey = rOther.m_aKey;
m_aValue = rOther.m_aValue;
return *this;
}
/** Operation.
*/
const OUString& GetKey() const { return m_aKey; }
const OUString& GetValue() const { return m_aValue; }
};
/*========================================================================
*
* SvKeyValueIterator.
*
*======================================================================*/
class SVT_DLLPUBLIC SvKeyValueIterator : public SvRefBase
{
struct Impl;
std::unique_ptr<Impl> mpImpl;
public:
/** Construction/Destruction.
*/
SvKeyValueIterator();
virtual ~SvKeyValueIterator() override;
SvKeyValueIterator(const SvKeyValueIterator&) = delete;
SvKeyValueIterator& operator=( const SvKeyValueIterator& ) = delete;
/** Operation.
*/
virtual bool GetFirst (SvKeyValue &rKeyVal);
virtual bool GetNext (SvKeyValue &rKeyVal);
virtual void Append (const SvKeyValue &rKeyVal);
};
typedef tools::SvRef<SvKeyValueIterator> SvKeyValueIteratorRef;
#endif // INCLUDED_SVTOOLS_SVPARSER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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